SOLUTION: the variables x and y vary directly.use the given values to write an equation that relates x and y x=5,y=40 I have no clue how to do it

Question 138204: the variables x and y vary directly.use the given values to write an equation that relates x and y
x=5,y=40
I have no clue how to do it
Found 2 solutions by Earlsdon, Alyssa Maserang:
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
To express the relationship of x and y, you write the equation of variation:
This says that x varies directly with y. The k is called the constant of variation and to find its value, you will need to be given a value of x and the corresponding value of y. Your problem provides these values:
x = 5, and y = 40.
So you substitute these into the equation and solve for k.
Divide both sides by 40.
Simplify the fraction.
This is the value of the constant of variation, k.
Now you can write the final equation of variation:

Answer by Alyssa Maserang(9) (Show Source): You can put this solution on YOUR website!

RELATED QUESTIONS
The variables x and y vary directly. Use the given values to write an equation... (answered by Fombitz)
The variables x and y vary directly. Use the given values to write an equation that (answered by tara0066)
The variables x and y vary directly. Use the given values to write an equation that... (answered by ewatrrr)
The variables x and y vary directly. Use the given value of the variables to write an... (answered by rfadrogane)
I need help with my math homework the instructions say The variables x and y vary... (answered by wuwei96815)
The variables x and y vary inversely. Use the given values to write an equation that... (answered by stanbon)
The variables x and y vary directly. Use the given values to write an equation that (answered by ankor@dixie-net.com)
The variables x and y vary inversely. Use the given values to write an equation... (answered by robertb)
teh variable =s x and y vary directly. Write an equation that relates the variables. Then (answered by gsmani_iyer)